Noun:
something additional of the same kind;he always carried extras in case of an emergency
a copy that corresponds to an original exactly;he made a duplicate for the files
Adjective:
identically copied from an original;a duplicate key
being two identical
Verb:
make or do or perform again;He could never replicate his brilliant performance of the magic trick
duplicate or match;The polished surface twinned his face and chest in reverse
make a duplicate or duplicates of;Could you please duplicate this letter for me?
increase twofold;The population doubled within 50 years
copy，duplicate，model，reproduction，facsimile这些名词均有“复制品”之意。
copy普通用词，含义广泛，指精确的或不精确的复制品。
duplicate常指完全一模一样，可代替原件的复制品。
model可指按某物式样制造、按比例缩小的模型，也可指某物未制成之前做出的模型。
reproduction指按原物复制的产品，着重复制品与原物相似。
facsimile含义与copy大体相同，但较文雅。
xerox，copy，duplicate这些动词均有“复印、复制”之意。
xerox指用静电复印或用静电印刷术复制。
copy着重模仿者的有意识行为或模仿得尽可能接近原件。
duplicate指对原件进行复制或复印，侧重结果与原件一模一样。
1620年左右进入英语，直接源自拉丁语的duplicare，意为加倍。
用作名词 n.
动词+～keep a duplicate保留副本介词+～in duplicate一式两份～+介词duplicate of完全一样用作动词 v.～+名词duplicate document复印文件duplicate key配钥匙
近义词 redo重做model模范copy复制品repeat重复twin孪生的spare备用的extra额外的double双重的facsimile摹本replicate复制replica复制品reproduce再生matching匹配的parallel平行的photocopy影印本identical同一的replacement更换reduplicate重复duplication复制xerox静电复印件reproduction再现twinned成双成对的carbon copy复写本, 极其相似的人或…
用作名词n.Is this a duplicate or the original?这是副本,还是正本?
Your jacket's a duplicate of mine.你的夹克跟我的一样。
This form should be filled out in duplicate.这种表格要填写一式两份。用作动词v.
用作及物动词
S+～+ n./pron.Can you duplicate the key for me?你能把这把钥匙再给我配一把吗?
The manager asks the secretary to duplicate the document.经理让秘书复印这份文件。
It occurred to us that we were merely duplicating their research.我们想到我们仅仅在重复他们的研究。
The document was duplicated.文件复制了。
The record-breaking harvest of 1975 may not be duplicated this year.今年不可能再获得1975年那种创纪录的丰收。其他All members received duplicated notices of the meetings.所有与会人员都收到了会议通知的复印件。
v.动词
duplicate用作及物动词,其基本意思是“复制”,即作一分与原件完全一致的复制品,引申可表示“复印”“重复”。
duplicate是及物动词,可用于被动结构。
动词58%,名词41%,形容词1%
用作形容词Here is a duplicate copy.这是份复制的文本。用作动词Please duplicate the document for me!请帮我复写下这份公文。